., Asia (2018) Analisis Kegagalan pada Shaft Gearbox Mesin Palletizer di PT. Holcim Tbk. Tuban. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Shaft merupakan bagian yang cukup penting di dalam motor karena shaft berfungsi sebagai penyalur gaya atau tenaga. Shaft bekerja sesuai dengan kerja mesin dan motor. Penelitian ini dilakukan untuk menganalisis penyebab kegagalan yang terjadi pada shaft gearbox mesin palletizer. Beberapa pengujian dilakukan untuk mendukung analisis ini. Dari hasil uji komposisi didapatkan bahwa material shaft tersebut merupakan AISI 1030 dan material shaft tersebut sesuai dengan ASTM A291. Dari pengujian metallography didapatkan hasil struktur mikro yang terdiri dari ferit dan perlit. Pengujian SEM dilakukan pada permukaan patahan dan hasil dari uji SEM menunjukkan adanya retakan dan terdapat garis striasi halus akibat adanya pembebanan berulang dan terus menerus. Uji kekerasan dilakukan pada 2 daerah yaitu daerah dekat patahan dan daerah yang jauh dari patahan. Semakin jauh titik pengujian dari patahan maka hasil kekerasan semakin menurun. Dari hasil analisis rietvield didapatkan nilai regangan dan tegangan sisa pada daerah yang dekat dari patahan lebih besar dari pada daerah yang jauh dari patahan. Pada patahan shaft ini terdapat retakan yang ditandai dengan adanya awal retakan (crack initiation) pada daerah ujung rumah pasak, penjalaran retak (crack propagation) yang ditandai dengan garis pantai dan final fracture dengan permukaan yang kasar.
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Shaft is an important part in the motor because the shaft functions as a styling or power supply. Shaft works in accordance with the work of the engine and motor. This study was conducted to analyze the causes of failure that occurred on the shaft gearbox palletizer machine. Several tests were conducted to support this analysis. From the compositional test results obtained that the shaft material is AISI 1030 and the shaft material is in accordance with ASTM A291. From the metallography test, the result of micro structure consisting of ferrite and pearlite. The SEM test is performed on the fracture surface and the result of the SEM test shows the presence of a crack and there is a fine striation line due to repeated and continuous loading. Hardness test was conducted on 2 areas, namely area near fault and area far from fracture. The further the testing point of the fault then the result of the hardness decreases. From the result of rietvield analysis, the value of strain and residual stress in adjacent area of fracture is greater than the area far from the fracture. In this shaft fracture there is a crack marked by the beginning of crack initiation at the end of the house peg, crack propagation characterized by coastline and final fracture with a rough surface.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.112 Asi a-1 3100018074237 |
| Uncontrolled Keywords: | crack; metallography; palletizer; rietvield; shaft |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TA Engineering (General). Civil engineering (General) > TA440 Concrete--Cracking. T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | - Asia |
| Date Deposited: | 19 Feb 2018 02:51 |
| Last Modified: | 20 Apr 2020 21:20 |
| URI: | http://repository.its.ac.id/id/eprint/49225 |
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